Introduction
The LiJiANi RD231 is a compact and portable FM/AM radio designed for convenient listening on the go. Featuring digital tuning, an alarm clock, and a sleep timer, it offers essential functions in a lightweight package. This manual provides instructions for the proper setup, operation, and maintenance of your RD231 radio.
Safety Information
- Do not expose the unit to extreme temperatures, direct sunlight, dust, or humidity.
- Avoid dropping or subjecting the unit to strong impacts.
- Do not attempt to disassemble or modify the radio. Refer all servicing to qualified personnel.
- Keep batteries out of reach of children. Dispose of used batteries properly.
- Remove batteries if the unit will not be used for an extended period.
Package Contents
Please check that all items are present:
- RD231 Portable FM/AM Radio Unit
- Earphones
- User Manual (this document)
Product Overview
The RD231 radio is designed for ease of use and portability.
Figure 1: Front Panel Controls and Display
Figure 2: RD231 Radio Dimensions
Key Features:
- FM/AM 2-band reception
- Digital tuning
- Compact and portable design (approx. 79.5mm x 56mm x 20mm / 3.1 x 2.2 x 0.8 inches)
- Alarm clock function
- Sleep countdown shutdown (10-90 minutes)
- Manual and automatic station storage
- Lockout function
- Region switching
Setup
1. Battery Installation
- Locate the battery compartment cover on the back of the radio.
- Slide the cover open.
- Insert two AAA batteries, ensuring correct polarity (+ and -) as indicated inside the compartment.
- Close the battery compartment cover securely.
Figure 3: Battery Installation
2. Connecting Earphones
Plug the included earphones into the 3.5mm headphone jack located on the top or side of the radio unit.
Figure 4: Earphones Connected
Operating Instructions
Power On/Off
Press the POWER button to turn the radio on or off.
Volume Control
Use the VOL+ and VOL- buttons to adjust the listening volume.
Band Selection (FM/AM)
Press the BAND/PRE button to switch between FM and AM bands.
Tuning Stations
- Automatic Scan: Press and hold the SCAN/SLEEP button to automatically scan for and store available stations.
- Manual Tuning: Use the UP and DOWN buttons to manually tune to desired frequencies.
- Preset Stations: Use the M+ and M- buttons to navigate through stored preset stations.
Setting the Alarm Clock
The radio features an alarm function. At the set alarm time, the buzzer will emit a "ticking" sound.
Figure 5: Alarm Clock Function
Refer to the on-screen prompts and specific button combinations (e.g., holding ALARM button) to set the alarm time.
Sleep Countdown Shutdown
The sleep function allows you to set a timer for the radio to automatically turn off. This is useful for falling asleep while listening.
Figure 6: Sleep Countdown Options
To activate and set the sleep timer, press the SCAN/SLEEP button repeatedly to cycle through available times (e.g., 10, 15, 30, 45, 60, 90 minutes).
Lockout Function
To prevent accidental button presses, use the LOCK switch (usually on the side or back of the unit) to disable all controls.
Region Switching
The radio may support different regional frequency settings. Consult the display and controls for options to switch regions if needed for optimal reception in your area.
Maintenance
Cleaning
Wipe the radio's exterior with a soft, dry cloth. Do not use abrasive cleaners, solvents, or strong chemicals, as these may damage the finish.
Battery Replacement
When the display indicates low battery or the radio's performance degrades, replace both AAA batteries with new ones, following the installation steps in the Setup section.
Storage
If storing the radio for an extended period, remove the batteries to prevent leakage and damage to the unit. Store in a cool, dry place away from direct sunlight.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power / Radio does not turn on | Batteries are dead or incorrectly installed. | Replace batteries with new ones, ensuring correct polarity. |
| Poor reception / Static | Weak signal, interference, or antenna not extended. | Extend the antenna fully. Move to a different location. Try switching regions if applicable. |
| No sound from earphones | Earphones not properly plugged in, or volume too low. | Ensure earphones are fully inserted. Increase volume. Test with another pair of earphones. |
| Buttons not responding | Lockout function is active. | Check the LOCK switch and ensure it is in the unlocked position. |
Specifications
| Feature | Detail |
|---|---|
| Product Category | Radio |
| Support Band | FM/AM (Full Band) |
| Model | RD231 |
| Radio Tuning Method | Digital tuning |
| Screen Size | 2*4.7 CM |
| Radio Storage | 108 presets |
| Rated Voltage | 3V |
| Material | ABS |
| Sound Quality Selection | Stereo |
| Rated Power | 1W |
| Channel | Binaural |
| Coding Chip Type | DSP AKC6958 |
| Battery Specifications | 1000MAh or less (2xAAA batteries) |
| Weight | 100g (approx. 3.5 oz) |
| Functions | Digital display, automatic shutdown, alarm clock, sleep mode |
| External Dimensions | 79.5mm x 56mm x 20mm (approx. 3.1 x 2.2 x 0.8 inches) |
| Channel Selection Method | Manual, automatic |
| Origin | Mainland China |
User Tips
- For best reception, try extending the antenna fully and rotating the radio to find the clearest signal.
- When using the sleep timer, ensure you select a duration that allows you to fall asleep comfortably without the radio playing all night, conserving battery life.
- The compact size makes it ideal for outdoor activities; consider using an armband for jogging or walking.
Warranty and Support
For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
